Using biomass as a source of energy allows one to overcome the decreased supply of fossil fuels. Biopellets—an energy product made from biomass—can be utilized. Biopellet research has employed a variety of biomass modifications. Combining or adding additional raw ingredients with superior qualities can raise the quality of the biopellet itself. The walnut plant itself is a forest plant that grows widely in eastern Indonesia. Walnut trees also located in the GOR Pajajaran area of Bogor City's, although they are merely one of the flora there and have not been utilised in such a way. If developed and processed further into processed energy products, such as biopellets—which are typically used as fuel for winter heating or can also be used to replace petrol fuel because they are more affordable and environmentally friendly—walnut kernel shells have the potential to be an alternative energy source.

Biopellet research has employed a variety of biomass modifications. Combining or adding additional raw ingredients with superior qualities can raise the quality of the biopellet itself. Because palm kernel shell have a calorific value when burned, they are frequently employed as a basic ingredient in mixtures to create biopellets. Because of their high calorific value, palm oil shells may be used as an extra raw material to produce biopellets of a higher calibre

As far as the author knows, there have been known studies about potential walnut kernel shell from GOR Pajajaran area of Bogor City's as Biopellet. The steps of raw material preparation, biopellet production, and biopellet characterization in accordance with SNI 8675:2018 on the quality of biomass pellets are where this research starts. This experiment carried out by different ratios of walnut kernel shell and palm kernel shell, including 70%:30%, 50%:50%, 30%:70%, and 0%:100%.  Combining them with a pre-established mixture, and then forming them using a pellet mill.

The present study aims to investigate the potential walnut kernel shell Canarium Indicum L.) and its combination with palm kernel shell for processing into energy products, specifically biopellets. This study will focus on quality tests of biopellet due to SNI 8675:2018. This experiment carried out by different ratios of walnut kernel shell and palm kernel shell, including 70%:30%, 50%:50%, 30%:70%, and 0%:100%. Calorific value and proximate value will evaluated to obtain the highest-quality biopellets.